setDestinationInExternalFilesDir(this,“/ download”,“app-debug.apk”);为什么这样可以节省内部存储?
以及为什么找不到包含/data/data/com.example.xxx/files/download/app-debug.apk的配置根目录
downloadManager = (DownloadManager) getSystemService(Context.DOWNLOAD_SERVICE);
Uri uri = Uri.parse("http://");
DownloadManager.Request request = new DownloadManager.Request(uri);
request.setDestinationInExternalFilesDir(this, "/download", "app-debug.apk");
request.setNotificationVisibility(DownloadManager.Request.VISIBILITY_VISIBLE_NOTIFY_COMPLETED);
Long reference = downloadManager.enqueue(request);
File imagePath = new File(getFilesDir(), "download");
File newFile = new File(imagePath, "app-debug.apk");
CharSequence text1 = "no file";
Toast toast1 = Toast.makeText(getApplicationContext(), newFile.getAbsolutePath()+"can't find file ", Toast.LENGTH_SHORT);
if(!newFile.exists()){toast1.show(); return false;}
Uri uri2 = FileProvider.getUriForFile(this,"com.example.xxx",newFile);
Intent i = new Intent();
i.setAction(android.content.Intent.ACTION_VIEW);
i.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
i.setData(uri2);
i.addFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION);
i.setType("application/vnd.android.package-archive");
startActivity(i);
提供商路径
<?xml version="1.0" encoding="utf-8"?>
<paths xmlns:android="http://schemas.android.com/apk/res/android">
<!--<external-path name="external_files" path="."/>-->
<files-path
name="tlumacz1"
path="download"/>
</paths>
清单
<provider
android:name="android.support.v4.content.FileProvider"
android:authorities="com.example.xxx"
android:exported="false"
android:grantUriPermissions="true">
<meta-data
android:name="android.support.FILE_PROVIDER_PATHS"
android:resource="@xml/provider_paths"/>
</provider>
mby内部存储器中有外部存储器还是这样?
答案 0 :(得分:0)
将getFilesDir()
替换为getExternalFilesDir()
。
并调整提供者路径。就像你原来的一样。